FatalThrowableError when using DatabaseSeeder, to populate

I'm doing a test, to populate the bd, using DatabaseSeeder. I have an individual VehiculosSeeder file, a Vehiculo model, linked to the vehicles table, and when I try to run from phisic artisan db: seed console, I get this:

    Symfony\Component\Debug\Exception\FatalThrowableError  : Class 'Model'      not found

  at C:\xampp\htdocs\logismart\database\seeds\DatabaseSeeder.php:14
    10|      * @return void
    11|      */
    12|     public function run()
    13|     {
  > 14|        Model::unguard();
    15|
    16|            $this->call(VehiculosSeeder::class);  // ejemplo ejecucion seeder
    17|                                                 //$this->call(UsersTableSeeder::class);
    18|        Model::reguard();

  Exception trace:

  1   DatabaseSeeder::run()
      C:\xampp\htdocs\logismart\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:29

  2   call_user_func_array([])
      C:\xampp\htdocs\logismart\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:29. 

My vehicle model is like this:

    use Illuminate\Database\Eloquent\Model;
use App\Vehiculo;

class Vehiculo extends Model
{
    protected $table = 'vehiculos';
    protected $fillable = array ['id', 'matricula', 'marca', 'capacidadCarga', 'añoFabricacion', 'color'];


    public function ordenes
        {   
            return $this->hasOne('ordenesCargas');

        }
}

My individual seeder VehiculosSeeder is like this:

<?php

use Illuminate\Database\Seeder;

class VehiculosSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
         Vehiculo::create([
             'id'    =>    001,
             'matricula'   =>    09890,
             'marca'   =>    Volkswagen,
             'capacidadCarga'   =>    20,
             'añoFabricacion'   =>    2001,
             'color'   =>    blanco,

         ])   //
    }
}

DatabaseSeeder stays like this:

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
       Model::unguard(); 

           $this->call(VehiculosSeeder::class);  // ejemplo ejecucion seeder
                                                //$this->call(UsersTableSeeder::class);
       Model::reguard();     
    }
}

Can you tell me what I'm doing wrong? Thanks